Horseradish Peroxidase Conjugated Goat Affinity Purified Antibody to Rat IgG, 1mL goat polyclonal Goat polyclonal antibodies have large lots so check the lot number if you would like to use the same lot of Horseradish Peroxidase Conjugated Goat Affinity Purified Antibody to Rat IgG, 1mL http://mybiofast.com/ver.php?search=goat&submit=Search